Keywords / models:
models:
Model tiering by phase. Ops & reuse
Syntax
models: fast <model>, strong <model>What it does
Name two tiers and the engine auto-assigns plan / reflect / also → fast and act → strong (observe is a shell check, no model). Override a phase or use all; cascades file → loop → stage; --model overrides everything. A stack of cheap calls plus one strong act — and an end-of-run per-tier cost summary so the spend is measurable.
Example
models: fast haiku, strong opus # file default
# override: `models: act fast` or `models: all strong`